Air-brush nozzle.



N. M. HANSEN.

AIR BRUSH NOZZLE. I APPLICATION rum) JUNE 2, 1911.

1,01 6, 144. Patented Jan. 30, 1912.

JNWNTUR.

, UNITED STATES PATENT oFFIoE.

NIELS M. HANSEN, OF TOLEIOO, OHIO, ASSI G-NOR TO THE DE VILIBISSMANUFACTURING COMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO.

rim-BRUSH Nozznn To all whom it may concern Be it known that I, NIELS'M. HANSEN, a

. citizen of the United States, and a resident of Toledo, in the countyof Lucas and State of Ohio, have invented a certain new and usefulAir-Brush Nozzle; and I .do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to thefigures of reference marked thereon, which form a part of thisspecification. .My invention relates to atomizing instruments andparticularly to air brushes of the class in which ,a stream of air fromone nozzle is directed over the discharge end of another nozzle tocreate a suction action therethrough.

The object of my invention is to improve upon instruments of this classwhereby a broader and more efiicient and uniform spray of the fan typeis discharged therefrom than has been possible with the instrumentsheretofore used.

The invention is fully described in the following specification, andwhile' in its broader aspect it is capable of embodiment in numerousforms, a preferred embodiment thereof is illustrated in the accompanyingdrawings, in which-- Flgure 1 is an elev'atlon of an instrumentembodying my invention with a portion of the same broken away. Fig. 2 isan enlarged plan view of the portion of the instrument containing thenozzles thereof. Figs.

3 and 4 are enlarged end and side views of the air nozzle. Fig. 5 is anenlarged end view of the liquid nozzle, and Fig. 6 is an enlargeddiagrammatical view of the air nozle and discharge orifice of the liquidnozzle with the former partly in section.

Referring to the drawings, 1 designates a receptacle of any suitableform for liquid paint, lacquer, powder or other matter which it may bedesired to apply in spray form.

to a receiving surface. Upon the top of this receptacle is mounted atube 2, which has one end in communication with a source of fluid underpressure, such for instance as air, and has its other end provided witha discharge nozzle 3 for directing a stream of air'across the dischargeend of a nozzle 4,

' Specification of Letters Patent. .Application filed June 2, 1911.

Serial No. 630,782.

.which is mounted on the top of the receptacle and has a tube 5projecting downward therefrom into the receptacle. The nozzle 4 ispreferably inclined slightly from a plane at right angles to the axis ofthe nozzle 3 in the direction of discharge of such nozzle and thedischarge ends of the two nozzles terminate adjacent each other, asshown with the discharge end of the nozzle 3 slightly to the rear of thedischarge orifice of the nozzle The feature of 'mypresent invention consists in so relatively shaping the discharge ends of the two nozzles 3and 4 that a fan spray of maximum width and substantially uniformdensity throughout its width is obtained.- This is accomplished by'making the discharge orifice of the nozzle 4 in the form of an arc of acircle the axis of which is located to the rear of the end of the npzzlefrom in a thin fan-like stream which coversthe transversely elongateddischarge orifice of the liquid nozzle 4. The discharge orifice of thenozzle 4 is of, greater length than the discharge orifice of the nozzle3 to render the length of the'former substantially equal to the maximumwidth of the fan-like stream'of air, which is discharged frorrf thenozzle 3, at its point of crossing the liquid nozzle, as illustrated inFig. 6.' The inner side of the outer end portion of the nozzle 4 isconcaved in concentric relation to the curved orifice thereof, as shown,to permit a projection of the end of the nozzle 3 into close proximityto the liquid nozzle orifice.

Patented Jan. 30, 1912.

. 3 and .in the plane of discharge of. said nob It is found in practicethat the forming of the end of the air nozzle and the orifice of theliquid nozzle in concentrie'arcs is very important in air brushes of thecharacter described in the obtaining of a fanlike spray of substantiallyuniform density throughout its width as the suction thereby createdwithin the liquid tube by the force of the air discharge thereacross isas great at the ends of the discharge orifice of the liquid nozzle as atthe center thereof.

"While my invention is shown and described as used in connection with anapparatus in which material is drawn from the receptacle 1 by suctioncreated within the nozzle 4 by the discharge ofa stream of airthereacross, it is also intended for use in the spraying of powdered orgranular substances the nature of which would not permit their beingdrawn through the nozzle 4 and tube 5 by suction but which must beforced therethrough by some suitable means for such-purpose, thedischarging of the air across the nozzle 4 in such case serving only topick up and carry the substance with it in a fan-like stream as it isejected from the nozzle 4..

I wish it understood that my invention isnot limited to use in anyparticular connection or to any particular construction or arrangementof the parts except in so far as such limitations are specified in theclaims.

Having thus described my invention, What I claim as new and desire tosecure by Let ters Patent, is,-

1. Inan air brush, a fluid nozzle and-a liquid nozzle disposed inintersecting planes with the liquid nozzle inclined in the direc tion ofdischarge of the fluid nozzle rela tive to a plane cutting the fluidnozzle at right angles and having its'discharge end terminating inadvance of the discharge end of the fluid nozzle in'close relation toits plane of discharge, the ends of the discharge orifices of thenozzles being transversely elongated and concentric, with the orifice ofthe liquid nozzle of greater Width than that of the fluid nozzle,

- 2. In an air brush, a tapered fluid nozzle and a tapered liquidnozzle'disppsed in intersecting planes with the liquid nozzle inportionof the liquid nozzle being concavein substantially concentric relationto-the nozzle orifices to permit a projection of the fluid nozzle intoclose proximity to the discharge orifice of the liquid nozzle.

In testimony whereof, I have hereunto signed my name to thisspecification in the presence of two subscribing Witnesses.

M. L. OIPENHEIM.

NIELS M. HANSEN.

